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Hulya Sarak

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Papers by Hulya Sarak

Research paper thumbnail of The degree-day method to estimate the residential heating natural gas consumption in Turkey: a case study

Research paper thumbnail of A Trilinear Flow Model for a Fractured Horizontal Well in a Fractal Unconventional Reservoir

SPE Annual Technical Conference and Exhibition, 2014

Research paper thumbnail of ASSESSMENT OF UNCERTAINTY IN ESTIMATION OF STORED AND RECOVERABLE THERMAL ENERGY IN GEOTHERMAL RESERVOIRS BY VOLUMETRIC METHODS

Research paper thumbnail of JEOTERMAL REZERVUARLARIN MODELLENMESİ

Research paper thumbnail of Lumped parameter reservoir models for low-temperature geothermal reservoirs

In this study, the production behavior of low-temperature geothermal reservoirs is simulated by a... more In this study, the production behavior of low-temperature geothermal reservoirs is simulated by analytical models. Models consider the effects of production and injection rates and natural recharge on the pressure or water level behavior of a low-temperature, liquid dominated geothermal reservoir. Reservoir and aquifer are represented by different tanks and the effect of recharge source is studied. Tank systems used

Research paper thumbnail of A NEW NON-ISOTHERMAL LUMPED-PARAMETER MODEL FOR LOW TEMPERATURE, LIQUID DOMINATED GEOTHERMAL RESERVOIRS AND ITS APPLICATIONS

Research paper thumbnail of ASSESSING UNCERTAINTY IN FUTURE PRESSURE CHANGES PREDICTED BY LUMPED-PARAMETER MODELS: A FIELD APPLICATION

Research paper thumbnail of NEW LUMPED PARAMETER MODELS FOR SIMULATION OF LOW-TEMPERATURE GEOTHERMAL RESERVOIRS

Research paper thumbnail of Lumped-parameter models for low-temperature geothermal fields and their application

Geothermics, 2005

The behavior of low-temperature geothermal reservoirs under exploitation is simulated using analy... more The behavior of low-temperature geothermal reservoirs under exploitation is simulated using analytical lumped-parameter models. These models consider the effects of fluid production and reinjection, as well as natural recharge, on the pressures (or water levels) of low-temperature, liquid-dominated geothermal systems. The computed responses for constant production/injection flow rates are given in the form of analytical expressions. Variable flow rate cases are modeled, based on the Duhamel's principle. Reservoir parameters are obtained by applying a weighted nonlinear least-squares estimation technique in which measured field data are history matched to the corresponding model response. By using history-matched models, the future performance of the reservoir can be predicted for different production/injection scenarios in order to optimize the management of a given geothermal system.We demonstrate the applicability of the models by simulating measured data from the Laugarnes geothermal field in Iceland, and the Balcova–Narlidere field in Turkey.

Research paper thumbnail of The degree-day method to estimate the residential heating natural gas consumption in Turkey: a case study

Research paper thumbnail of A Trilinear Flow Model for a Fractured Horizontal Well in a Fractal Unconventional Reservoir

SPE Annual Technical Conference and Exhibition, 2014

Research paper thumbnail of ASSESSMENT OF UNCERTAINTY IN ESTIMATION OF STORED AND RECOVERABLE THERMAL ENERGY IN GEOTHERMAL RESERVOIRS BY VOLUMETRIC METHODS

Research paper thumbnail of JEOTERMAL REZERVUARLARIN MODELLENMESİ

Research paper thumbnail of Lumped parameter reservoir models for low-temperature geothermal reservoirs

In this study, the production behavior of low-temperature geothermal reservoirs is simulated by a... more In this study, the production behavior of low-temperature geothermal reservoirs is simulated by analytical models. Models consider the effects of production and injection rates and natural recharge on the pressure or water level behavior of a low-temperature, liquid dominated geothermal reservoir. Reservoir and aquifer are represented by different tanks and the effect of recharge source is studied. Tank systems used

Research paper thumbnail of A NEW NON-ISOTHERMAL LUMPED-PARAMETER MODEL FOR LOW TEMPERATURE, LIQUID DOMINATED GEOTHERMAL RESERVOIRS AND ITS APPLICATIONS

Research paper thumbnail of ASSESSING UNCERTAINTY IN FUTURE PRESSURE CHANGES PREDICTED BY LUMPED-PARAMETER MODELS: A FIELD APPLICATION

Research paper thumbnail of NEW LUMPED PARAMETER MODELS FOR SIMULATION OF LOW-TEMPERATURE GEOTHERMAL RESERVOIRS

Research paper thumbnail of Lumped-parameter models for low-temperature geothermal fields and their application

Geothermics, 2005

The behavior of low-temperature geothermal reservoirs under exploitation is simulated using analy... more The behavior of low-temperature geothermal reservoirs under exploitation is simulated using analytical lumped-parameter models. These models consider the effects of fluid production and reinjection, as well as natural recharge, on the pressures (or water levels) of low-temperature, liquid-dominated geothermal systems. The computed responses for constant production/injection flow rates are given in the form of analytical expressions. Variable flow rate cases are modeled, based on the Duhamel's principle. Reservoir parameters are obtained by applying a weighted nonlinear least-squares estimation technique in which measured field data are history matched to the corresponding model response. By using history-matched models, the future performance of the reservoir can be predicted for different production/injection scenarios in order to optimize the management of a given geothermal system.We demonstrate the applicability of the models by simulating measured data from the Laugarnes geothermal field in Iceland, and the Balcova–Narlidere field in Turkey.

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